Metaphor:
* "His [Dumbledore's] eyes, usually so bright and full of life, were dull and glazed." (Chapter 1) - Comparing Dumbledore's eyes to something lifeless, highlighting his weakened state.
* "Dumbledore's voice was like ice." (Chapter 1) - Emphasizing the coldness and harshness of his tone.
* "He was a phoenix, reborn from the ashes." (Chapter 21) - Comparing Harry's return to life to the mythical phoenix, suggesting his resilience and renewal.
Simile:
* "The air was as thick as treacle, and the scent of lavender was overpowering." (Chapter 1) - Comparing the air to treacle to describe its heavy and sticky nature.
* "The air crackled like electricity." (Chapter 2) - Comparing the atmosphere to crackling electricity, highlighting its tense and volatile nature.
* "The moonlight streamed through the window, as pale as a ghost." (Chapter 10) - Comparing the moonlight to a ghost to emphasize its ethereal and ghostly quality.
Personification:
* "The wind howled outside, a mournful wail." (Chapter 4) - Giving human qualities to the wind, emphasizing its sadness and desperation.
* "The castle seemed to hold its breath." (Chapter 17) - Attributing human emotions to the castle, creating an atmosphere of suspense and anticipation.
* "The silence screamed at him." (Chapter 27) - Personifying silence to amplify its oppressive and unsettling nature.
Hyperbole:
* "It was the loudest, most horrible bang he had ever heard." (Chapter 3) - Exaggerating the sound to emphasize its shock and intensity.
* "He felt as though he were drowning in a sea of pain." (Chapter 16) - Exaggerating his pain, highlighting its overwhelming nature.
* "He was so tired he could have slept for a year." (Chapter 20) - Emphasizing his extreme exhaustion and desire for sleep.
Other figures of speech:
* "The sky was the color of bruised plums." (Chapter 12) - An example of imagery, painting a vivid picture of the sky.
* "He felt a cold, hard knot of dread in his stomach." (Chapter 19) - Using metaphor and imagery to represent the feeling of fear.
These are just a few examples of figurative language used in *Harry Potter and the Half-Blood Prince*. J.K. Rowling effectively uses these techniques to enhance the story's emotional impact, create a sense of suspense and mystery, and enrich the reader's experience.